Gas-engine slide-valve mechanism.



'-G. w. HAURY.

GAS ENGINE S'LIDYE VALV MECHANISM. APPLlcATloN FILED SEPT. 7, |915.

Patented Nov. 20,1917.

y 2 SHEETS-SHEET l.

Jayeg/Zr G. w. H/\u|w.- l. GAS ENGINE SLI-DE VALVE MECHANISM, APPLICATl-ON FILED SEPT. 7| 1915 y 1,247,109. 'i Patenud l\0v.20,14917.l

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Q5 E zz MJU dynamica.

, TooZZ whom t may concern:

le it known that I GEORGE "citizen of the United States, residing at "Chicago, in tliecounty of Cook and State y sra'riis PATENT onirica."

GEORGE W. HAURY, or CHICAGO, ILLINOIS.`

W. Hanf, a

of Illinois, have invented "certain new and useful Improvements in Gas=Engine Slide- Valve Mechanism, of which the following is a specification.

My invention relatesf'to slide-valve gas" engines. Among its objects are-to promote efficiencyv and attain silence in'engine operation; to provide a simple and economical valve construction with p ositively operated i slide-valves; to arrange thevalve structure s0 that its movable parts are freey from Wearing engagement with the piston'of the engine land from directaction Tof the 1gnited charges; to construct and locate the valve' structure axially beyond the engineframe-proper 4for readyl accessibility and` re-v movability of parts; and to provide ay con.

' .struction in which the valve mechanism is -In the drawings;

made gas tight iby simple and adequate means. i

vFigure 1, is a central vertical section Athrough a fragment of a multiple cylinder eng Fig. 2 is a horizontal sectiontaken on linev ne, taken on line' 1-1 of Fig. 2;

2.--2 of Fig. 1.

- Fig. 3 is' a vvertical 'section on line 3--34 jof Fig. 1, and;

Fig'.- 4 is a annulus.

The gas engine 10 V may be ofthe usual four-cycle construction in general, fand may embody any desired number of cylinders 11. Any suitable mechanism, fragmentarily indicated by.gearing,h1 3 may be employed vtodrivea valve-:actuating shaft 14;,1 in one-V to-two..relation, i t o .the engine crank shaft.

Such valve-shaftjfjlis located beyond the cylinders. and .isV demountably carried in `The properly timed cranks 16 separately actuate all of the GAS-ENGINE SLIDE-VALVE ivinoimNrsM.

4 Specification of Letters Patent.l i 'i Application led September?, 1915. SeralNo. 49,142. v

detaililof the two-.part slidev Patented Nev. 2o, ',191 i.

vides a combustionV chamber 22 openin axially tov the engine cylinder, andvcloseat its outer end 23. In the' walls of thehead. are made longitudinal slide ways 24, and inthem Slide the two valves25 and 25 thatl respectively control the intake and exv Aliaust` ports for the cylinder.` Theports or openings 26 land 26" of said respective valves preferably have their external mouths at. a higher level? than their interna-l mouths, to facilitate the gas-tight packing,

and' each suchy Vvalve opening controlsits' appropriately locatedv intake porticoup'le 27 or exhaust port-couple 27 niaclefat proper levels in the walls of theslide-way. The two valves, axially reciprocated independently by links 28..,ancl 28 that are detacl'iably pivoted. to the valves and that connect' the suitable cranks ofthe shaft 14:,v therefore respectively control the introduction and 4eduction of the fuel and exhaust gases. More specifically the` enginehead 17 may best provide, in a single casting, the annular walls or shells 30 for the' several valve'- mechanisms, the flanges 31 that form the bottoms vof slide'spaces- 24, the: piping stubs 32 and 32 vthat respectively conne'ctthe in*- take and exhaust ports: Withfthe manifolds 33 and 33, and the Water jacket Bilffor the entire head. 'Each said flange l31 receives the reduced end of a valve-cylinder 35, that is locked in place by,a'suitably packed nut 36. Thus the slide space 24 between the concentric walls 30 and 535 is annular fin-gsection. Of course the" diameter and depth yof l the, combustion chamber 22v Within the valve` cylinder 30' may 'be' varied tol give just the desired compressionf'area, but 'generally the Vdiameter-.lis made less than that'v of the engine cylinder 11,. to provide a reduced bore extension of the cylinder varea and theA spa-rk 4plug 38isl generally located centrally in the end wall. 23- of` such spac'e. Suitable pack-ingrings 39 ca-rried bythe head Walls` '.30'and 35 above and below the port'sinake gas tight li'itv with"'tl'i e slide valve members' 25 and25". i The tvtoival-ve members 25 and v25 'of each pairbiterlfock slid'ably at their meeting edges southat jointly-they form an annulus" against radial displacement of its parts. v y v This interlockingjoi'nt is-prefer'ably made as shown .in Fig'. 2 1 by fo @dove-tail tenonsand mertisesij'a seth@ engaging edges of tlie'ies p I prefer thattlie spaeiiigb thosejski-lledfin the art and it will .be ob.

crank'iof the valve-crank shaft `and the cylinder-*head 23 shall'f be" greater, `than the length of the Valve member so that any valve member may be axially. removed sub# sequently to its disconnectionfrom its-link '28 or 28. Or, if vt-his distance be shortened, to less Ithan such clearance .removal .of the valves may be accomplished by preliminary iremoving the grank shaft from its i split .v

bearings.

It `will be understood, of course, thatthe crank Willbeproperly. timed to. cause valve operation during .the 'proper cycles of engine rotation and inproper sequence according :to the number of cylinders employed., @gy- Many advantages of slide' valve construction, are, generally. recognized, .as evidenced y by adoption of` the .knight.engine. My.

. .invention retains such Vsalient advantages as positive action, silence,I and durability;

reduces the number of parts'andsimplifies. .the construction.; assures application of the explosive forcegdirectly along the-line of piston displacement for engme eiiicwncy; removes the moving: parts of the -Valve from head. y, @Other advantages .Will be apparent to viousthat while I have .herein described in some detail a particular embodiment of my invention forxpurposes of fulldisclosure of one form thereof, `changes in Vconstruction ,..may readily be made Without-departing fromthe spirit of my invention.`

WhatIclaimis; 1. A ,gas engin'ef valve mechan1smcom' prisinga headattachableto the end yof an engine'. cylinder, said.. head containing an extended waterfjacketspace, intake and eX- fhauststubs fand. having a centrally `posi tionedlcylindrical opening therein, a tubular .shell .positioned Within said opening and spacedfrom the walls thereof, means for for reciprocating the said valve members,` and means independent ofthe tubular shell j I .securing the tubularshell tolthe head, longitudinally reciprocal valve members. slid-y .ingly controlling portsformed in said head and tubular shell, means .carriedby the head for .attaching the` head to' the engine Acyl*- Y inder. 60,

2. An engine valve mechanism comprising longitudinally slidableported valves, said valves jointly forming'an annulus and hav-.j`

ing their edges interlocked against radial displacement but slidablerelative to each other.

3. Gasengine valve mechanism comprising a structure having parallel .annular` ported walls surrounding a combustion chamber and longitudinally slidable ported valves in the space between said walls,- said valves jointly forming an annulus and having their edges `interlocked-against radial displacement but Y`slidable relatively to each Q other. l I

4. Gas engine valve mechanism comprlsed walls surrounding a combustion chamber and longitudinally slidable ported .valves ing a structure having parallel annular portin the space between said walls, said valves jointly forming an annulus and having at their edges coacting dove-tailedgmortises andtenons preventing radial separation of the valves but leaving them free for independent longitudinal movement. 2,.

5 A slide-valve head conaprislng aishell having an internalbottom flange, a` ported `cylinder closed` at` one end andat its 'open j end reduced and seatedn saidilangameans carried byl the lower end ofthecylnder for securing theshell and cylinder in Xed relation to eachother, and longitudinallyslidable ported .Valve-members `in the interspace between ythe shelland cylinder.

" '6' A Sli-de'valve head Comprising a 'wwf- .`jacl{eted,y ported shell having van internal bottom flange, a ported cylinder closedat one end and at its open end reduced and seated on said flange, means carriedy by the lower end of .the cylinder for securing theshell and cylinder' in fixed relatidnto .each

other,"l and longitudinally slidable ported valve-meml'ajfers in the interspacebetween the shell and cylinder. l 7.. A slide-valve head. comprising ai ported shell having an internal bottom flange, a

ing its lower end reduced to fit Within said ported cylinder closedlat one endand ha'v- 'f f flange andxed thereto; and portedslidingf vvalves in the .space ybetween said cylinder and shell, having `their 'meeting edges in? terlocked against radial separation.

. 8. A slidevalve head comprising aported shell having I an internal bottom flange, .a

ported cylinder closed at one endl and hav- 7' 1ng`its lower-end reducedfto vfit within said flange and fixed thereto; and ported sliding' valves in thespace'between said cylinder and shell, `having` their meeting edges interrlocked against radial separation, by dovetail grooves` and tenons inthe respective 9. A `gase Y'engine valve mechanismeomlindrical opening therein With an internal 'bottom ange,-'a ported cylinder closed at prising a head attachable to thel'end of an engine cylinder andhaving a /central' cy' one end and at its open end reduced and y "seated ons's'aid flange, an annular .ring of anv external dlameter equal to that ofthev engine ,cylinder Einternally'threaded for. en-

gageniet with the threaded lower end of the handin the `presence of two subscribing witported cylinder to clamp the same in fixed nesses.

relation with respect to the head, and longitudinally slidable ported valve `membet's in 5 the inner` space between: the' Walls `ofthe 'In'the presence of-"l cylindrical opening and the ported cylinder. FoRE- BAIN, l

In testimony whereof I hereunto set my v MARY F.-ALL1:N.v

' GEORGE W.. HAURY.' e 

